>  > So we could combine the word-prefix-syntax architecture of {expand}...
>  > with the use of the somewhat more eye-pleasing prefix $* .

>  Maybe that would be the occasion to introduce double/multiple 
>  substitution

That's a very separate topic, requiring a separate TIP.  If you
must bring it up, please start another thread of discussion.

>  OTOH this doesn't solve command expansion, i.e {expand}[command 
>  args...]. 

Yes it does.  Please look at the examples in the followup message.
Whereever 157 proposes {expand} this alternative would propose $*
and would behave exactly the same.

| Don Porter          Mathematical and Computational Sciences Division |
| donald.porter@[...].gov             Information Technology Laboratory |
| http://math.nist.gov/~DPorter/                                  NIST |
|______________________________________________________________________|



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